`static_cast` is a type of casting operator in C++ that allows you to convert one data type to another at compile time. It is used for safe conversions between compatible types, such as converting an `int` to a `float` or a pointer of a base class to a derived class. This operator performs checks to ensure that the conversion is valid, helping to prevent errors during runtime. Unlike `reinterpret_cast`, which can perform unsafe conversions, `static_cast` ensures that the conversion adheres to the rules of the type system. It is commonly used when you want to explicitly indicate that a conversion is intended, making the code clearer and easier to understand for other developers working with the same codebase.